ENRADD Expert

The Offices of Perry J. Zucker, Degreed Engineers, are a well-established and accomplished forensic engineering firm that has been serving clients nationwide since 1993. Our dedicated team of professionals, including engineers, technicians, and support staff, is experienced in addressing  ENRADD speeding citations and violations pertaining to probable cause traffic stops and reasonable suspicion traffic stops.

Role and Responsibility of the Expert Witness - Engineer - ENRADD Speeding Devices

An engineer expert witness (EEW) is someone who specializes in engineering,  that assist the judicial system  (judges and/or juries and/or lawyers) to  understand the technical aspects of their case. They may be asked to explain how science applies to certain situations, in cases of laws and/or regulations. The EEW, may testify about police ENRADD speed measuring devices, geographic of the specific roadway as well as the proper use of the said device.  All of our conclusions are from evidence based data, NOT speculations. 

Here are the key responsibilities of an expert witness in such cases:

1. Technical Explanation: The expert witness provides a detailed technical explanation of how speed measuring devices (like enradd) operate.
2. Accuracy and Reliability: They testify to the accuracy and reliability of the speed measuring device used in the case.
3. Training and Certification: The expert witness outlines their own qualifications, training, and certification in using speed measuring devices. This helps establish their credibility in interpreting and presenting technical data to the court.
4. Evidence Interpretation: They interpret the data obtained from the speed measuring device and explain its significance to the court. This includes clarifying how the speed measurement was taken, any relevant environmental conditions, and potential factors that may affect accuracy.
5. Cross-Examination: During cross-examination, the expert witness defends their testimony against challenges from the defense. They may also address any discrepancies or alternative interpretations of the technical evidence presented.

Overall, the expert witness serves to educate the court on the technical aspects of the case, ensuring that judges and jurors can make informed decisions based on reliable evidence. Their role is critical in providing clarity and impartiality regarding the technical details of speed measurement in the context of speeding tickets or traffic violation cases.

How Police ENRADD Speed Timing Device Works? - Speeding Expert: 

The ENRADD device utilizes infrared technology to calculate speed based on the timing theory between two designated points with a known distance, such as perpendicular roadway lines or sensors. The ENRADD system (EJU-91) has been approved by Penndot under 75 pa C.S. 3368 (3) / PA Bulletin 33 number 31. Using a simple formula, we can calculate the distance (d) by subtracting the initial distance (d1) from the final distance (d2), and the time (t) by subtracting the initial time (t1) from the final time (t2). From these calculations, we can determine the velocity (v) using the formula v = d/dt. The police officer or trooper operates the ENRADD unit to observe and record the speed of the target vehicle (yours or the defendant) using the LED/LCD digital display of the ENRADD system. Watch the video >

Police ENRADD - Standard Operating Procedure:

The police officer/operator conducts a series of prescribed tests that can help determine the proper functioning of the device. It is essential for the police officer/operator to receive training in the operation of this particular speed measuring device.

Distance Between The Sensors - ENRADD

Distance between two built-in timing sensors points, will play a factor in the accuracy. 

ENRADD Speed Accuracy

The accuracy might depend on the set up, operation, environmental factor, as well as roadway conditions, such as grades, coef, etc.

Errors in ENRADD

Discrepancies in accuracy may occur from the device and/or by operation of the ENRADD device by the police officer.

Methods of ENRADD Set-Up:

Catch and Chase:

The process involves the use of two police vehicles. Police vehicle one is positioned as a stationary unit that sets up the ENRADD speed measuring device on the side of the road. The operator activates the speed measuring device, which detects when the target vehicle breaks the first beam and later breaks the second beam, resulting in an output. The police officer or state trooper then reads the digital display showing the speed of the target vehicle. This information is communicated to a second police officer in vehicle two, who is located ahead, through a police 2-way radio. Finally, the pursuing police vehicle initiates a traffic stop on the target vehicle.  Watch the video >

ENRADD Speeding Ticket - Trial Preparation:

Review all the document(s) / data. Police Officers that issue ENRADD speeding tickets / violations are "Experts" in the operation of the aforementioned device. Logically the best defense, is to retain an "Expert / Expert Witness" in this exact field. The expert should be an engineer, that is familiar with gap time / VASCAR / ENRADD speed measuring device (certified speed measuring device operator / instructor), police trainer , vehicle characteristics, certified vehicle technician/ mechanic, as well as court rules. 

Police ENRADD Speeding Expert Witness

We provide skilled ENRADD professionals who are capable of conducting on-site inspections, meticulous analysis of all materials and data, and delivering expert witness testimonies regarding the controversial police ENRADD speeding ticket and probable cause traffic stops. Our services are available across the nation.

Expert Witness Services

Includes the following states: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey (NJ), New Mexico, New York / NY / New York City / NYC, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania (PA) , Rhodes Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming.